Tapani is a family owned business, building the critical infrastructure and buildings that support our communities across the Pacific Northwest.
Since 1983, our team has grown from a single-family crew to a team of over 500 employees with offices in both Washington and Oregon. Our work has diversified from primarily underground utility work to five different areas including Civil Site Development, Buildings, Transportation, Utility Infrastructure and Environmental. With every project we do, we are passionate about building what matters while improving the lives of our employees, clients and trade partners.
Tapani Underground is founded by Iner & Beverly Tapani.
First full-time employee, Mickey Radford, is hired.
Tapani is awarded first 1 million-cubic-yard project for Port of Vancouver’s Subaru offloading facility.
First HDPE pipe project, installing 2.5 miles of 32-inch pipe in Orchards area near Vancouver.
Tapani is chosen to construct its first 150 plus lot subdivision in Vancouver.
Awarded first major WSDOT infrastructure project of $10 million as a subcontractor on a $42 million contract.
Tapani constructs the $18 million Gher Rd overpass project in Orchards area near Vancouver.
Tapani performs its first hydroelectric project: The Swift Tail Race.
The company surpasses 100 employees.
Tapani constructs the North Jetty on the Columbia River in Ilwaco, WA. This project involved major growth for our teams.
Construction begins on first project for the Federal Highway Administration, a $20 million project on the Olympic Peninsula.
Fleet reaches 300 pieces of equipment.
Tapani Materials, Inc. is founded as a subsidiary.
Tapani self-performs its first major infrastructure bridge: Pioneer Street Rail Overpass in Ridgefield, WA.
Tapani is awarded the RFP to install over 1 mile of 66" welded Steel Pipe Transmission Main.
Tapani opens a regional office in Sherwood, OR.
Tapani begins constructing the new 36,000 square foot headquarters building in Battle Ground.